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प्रश्न
Distinguish between Earthquakes and volcanoes.
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उत्तर
| Earthquakes | Volcanoes | |
| 1. | An earthquake occurs when the tension in the normal movements within the earth's crust increases, leading to massive waves creating trembling on the earth's surface. | Volcanoes form when tectonic plates collide, pushing one plate beneath another. Tectonic plates also move away from one another to produce volcanoes. Hot magma rises from the mantle at mid-ocean ridges, separating the plates. This molten rock then rises and erupts on the surface, building up a volcano. |
| 2. | Earthquakes are difficult to predict because of the random pattern in their occurrence. | Volcanoes are easier to predict as eruptions of varying rates precede their formation. |
| 3. | Earthquakes originate from deep within the earth's mantle | Volcanoes are surface features. |
| 4. | Earthquakes only lead to destruction. | Volcanoes may cause the formation of the new crust as magma ejected from a volcano cools down to from new surfaces. |
| 5. | Earthquakes will typically nor produce significant debris but debris will result from the disturbances caused by the earthquake. | Volcanoes can produce significant debris through ashfalls, mudslides, etc. |
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संबंधित प्रश्न
Give a geographical reason.
Most of the volcanoes are found on the plate boundaries.
Write an answer to the following question in your own words.
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The narrow pipe through which magma flow out is called a ______.
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What are the causes of Volcanic Activity?
Volcanoes made of cinder and ash and which have sleep slopes are ______ volcanoes.
People who study volcanoes are called ______.
What is an explosive eruption?
Consider the following statement and choose the appropriate answer:
Statement 1: When magma rises slowly to the surface and spreads over a vast area. It is known as a fissure eruption
Statement 2: The viscosity of lava is determined by the amount of silica and water in magma.
Consider the following statement and choose the appropriate answer:
Statement 1: Many volcanoes of Mexico and Central America are cinder-cone volcanoes.
Statement 2: Shield volcano is also called a stratovolcano.
